body{
    margin: 0px;
}
#app{
    width:1280px;
    height: 640px;
    background-color: white;
    border: 1px solid white;
    margin: 0 auto;
}
#top{
    border: 1px solid white;
    margin-top: 10px;
    margin-left: 30px;
}
#blist{
    width:1240px;
    height: 483px;
    border: 1px solid white;
    margin:5px auto;
    overflow: auto;
}
#newbuding{
    width:295px;
    height: 150px;
    border: 2px dashed #C2C2C2;
    color: #8c8c8c;
    margin-top:7px;
    margin-left: 6px;
    float: left;
    line-height: 150px;
    text-align: center;
    cursor: pointer;
}
.buding{
    width:295px;
    height: 150px;
    border: 2px solid #C2C2C2;
    margin-top:7px;
    margin-left: 6px;
    float: left;

}
.b_up{
    height: 108px;
    width: 292px;
    border: 1px solid white;
    overflow: auto;
}
.up_1{
    height: 90px;
    width: 90px;
    margin-left: 8px;
    margin-top: 8px;
    border: 1px solid white;
    float: left;
}
.up_2{
    height: 90px;
    width: 170px;
    margin-left: 8px;
    margin-top: 8px;
    border: 1px solid white;
    float: left;
}
.b_down{
    height: 40px;
    width: 295px;
    overflow: auto;
}
.b_caozuo{
    height: 39px;
    width: 147px;
    float: left;
    line-height: 38px;
    text-align: center;
    font-size: 14px;
    background-color: #f3f3f3;
    border-top: 1px solid #C2C2C2;
    color: #a0a0a0;
}
.b_caozuo2{
    height: 39px;
    width: 146px;
    float: left;
    line-height: 38px;
    text-align: center;
    font-size: 14px;
    background-color: #f3f3f3;
    border-top: 1px solid #C2C2C2;
    border-left: 1px solid #C2C2C2;
    color: #a0a0a0;
}